使用 AFNetworking 上传图像

Posted 2023-02-23

【中文标题】使用 AFNetworking 上传图像

【英文标题】：Uploading images using AFNetworking

【发布时间】：2018-07-31 09:35:27

【问题描述】：

我正在尝试使用 AFNetworking 库上传图片，它是一个发布请求，图片应该在正文中。我将它转换为 NSData 并尝试发送它，但它不起作用，我从后端人员那里得到的所有信息都是图像形式应该是图像文件。

我的代码如下：

+(void)imageUpload:(NSMutableDictionary *)imageData :(void(^)(BOOL success,NSError *error,NSString *path))block
    NSString *urlString = [baseUrl stringByAppendingString:@"Media/ImageUpload"];
    NSMutableDictionary *parameters = [NSMutableDictionary new];
    [parameters setObject:[self getXsession] forKey:@"x-session"]; 
    UIImage *image = [imageData objectForKey:@"image"];
    NSData *imgData = UIImagePNGRepresentation(image);
    NSMutableDictionary *bodyImage = [NSMutableDictionary new];
    [bodyImage setObject:imgData forKey:@"image"];
    [bodyImage setObject:@"leads_temp" forKey:@"folder"];
    [self makePostRequestWithUrl:urlString parameters:parameters body:bodyImage headers:nil updateXsession:NO completionBlock:^(NSError *error, id responseObject) 
        BOOL success = [responseObject[@"meta"][@"status"]isEqualToString:@"OK"]?YES:NO;
        if(success)
            NSString *path = responseObject[@"response"][@"path"];
            if (block)
                block(success,nil,path);
            
        else 
            if (block)
                block(NO,error,nil);
            
        
    ];

发布请求：

+(void)makePostRequestWithUrl:(NSString *)url parameters:(NSMutableDictionary *)parameters body:(NSMutableDictionary*)body headers:(NSDictionary *)headers updateXsession:(BOOL)shouldUpdate completionBlock:(void(^)(NSError *error, id responseObject))block 
    NSError *error;
    NSMutableURLRequest *request = [[AFHTTPRequestSerializer serializer] requestWithMethod:@"POST" URLString:url parameters:parameters error:&error];
    request.timeoutInterval = 30;

        NSData *jsonData2 = [NSJSONSerialization dataWithJSONObject:body options:NSJSONWritingPrettyPrinted error:&error];
        NSString *jsonString = [[NSString alloc] initWithData:jsonData2 encoding:NSUTF8StringEncoding];
  stringWithFormat:@"%@\n%@\n%@",tableValue,jsonString,@""];
    [request setHTTPBody:[jsonString dataUsingEncoding:NSUTF8StringEncoding]];
    AFHTTPSessionManager *manager = [AFHTTPSessionManager manager];
    [[manager dataTaskWithRequest:request completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) 
        NSHTTPURLResponse *myResponse = (NSHTTPURLResponse *)response ;
        if (myResponse && shouldUpdate) 
           //do some stuffs
        
        if (block) 
            block(error, responseObject);
        else 
            block(responseObject, error);
            return ;

        
    ]resume];

知道解决方案是什么吗？ 谢谢。

【问题讨论】：

我也有类似的问题：***.com/questions/40058781/…

@Stefan 将UIImage 转换为UTF8 字符串不是一个好主意。可以分段上传UIImage。

@Kuldeep 通过多部分它将是比特块（数据）。服务器期待图像而不是数据

@Stefan，根本没有块。

github.com/mikeho/QSUtilities/blob/master/QSStrings.h 我想有一个正当的理由为什么有一个完整的库作为将图像转换为 Bas64 的工具，或者这是一个很大的错误？

【参考方案1】：

试试这个。

-(void)uploadImage1:(UIImage *)img Dictionary:(NSMutableDictionary *)dictParam 
    NSData *imageData;
    if (img == nil) 

    
    else 
        imageData = UIImageJPEGRepresentation(img, 0.7); // IF you want to compress image
    

    AFHTTPRequestSerializer *requestSerializer = [AFHTTPRequestSerializer serializer];
    AFHTTPResponseSerializer *responseSerializer = [AFHTTPResponseSerializer serializer];

    requestSerializer = [AFJSONRequestSerializer serializer];
    responseSerializer = [AFJSONResponseSerializer serializer];

    NSError *__autoreleasing* error = NULL;

    NSMutableURLRequest *request = [requestSerializer multipartFormRequestWithMethod:@"POST" URLString:"YOUR_URL" parameters:dictParam constructingBodyWithBlock:^(id<AFMultipartFormData> formData) 
        if (imageData != nil) 
            [formData appendPartWithFileData:imageData
                                        name:@"profile_image" // Name of your Image Param
                                    fileName:@"user_image.jpg"
                                    mimeType:@"image/jpg"];
        
     error:(NSError *__autoreleasing *)error];

    AFURLSessionManager *manager = [[AFURLSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];

    manager.responseSerializer = responseSerializer;

    NSURLSessionUploadTask *uploadTask;
    uploadTask = [manager uploadTaskWithStreamedRequest:request progress:^(NSProgress * _Nonnull uploadProgress) 

    
                                      completionHandler:^(NSURLResponse * _Nonnull response, id  _Nullable responseObject, NSError * _Nullable error) 
                                          if (error) 
                                              [SVProgressHUD dismiss];
                                              NSLog(@"ERROR = %@",error.localizedDescription);
                                          
                                          else 
                                              if ([[responseObject valueForKey:@"status"] intValue] == 1) 
                                                  NSLog(@"SUCCESS");
                                              
                                              else 
                                                  NSLog(@"ERROR FROM SERVER = %@", [responseObject valueForKey:@"message"]);
                                              
                                          
                                      ];

    [uploadTask resume];

【讨论】：

formData 是AFMultipartFormData 类型，它只是名称，您可以保留任何您想要的名称。

Refer this : github.com/AFNetworking/AFNetworking & search Upload Task 你会看到一个多部分请求的例子

@MrJ，欢迎您，也不要忘记投票。